Paragraph Two discusses the extreme conditions of Antarctica.
Paragraph Four discusses the changes Nielsen had to make in the way she practiced medicine in order to adapt to extreme weather conditions.
Paragraph Five discusses how Nielsen came to discover the lump in her breast and how she determined that it was cancerous.
Paragraph Six discusses how Nielsen learned to survive the ordeal through the use of the Internet.
Paragraph Seven concludes the reading by telling how Nielsen was eventually transferred from Antarctica and how she later had the surgery which saved her life--and how she went on to tell her story.